Into the Horizon

At 3S Engineering and Certification, we believe in providing our customers the highest level of Standards, Service and Support for aircraft modification and Organization Designation Authorization (ODA) approved Supplemental Type Certificates (STCs) to ensure your aircraft are into the horizon as efficient and quickly as possible.

What Sets 3S Apart

…ultimately bring the best value to our customers.

3S is a very agile company focused on customer service. Our parent company, Sierra Nevada Corporation, is privately owned and has a strong financial position with strong working capital, which allows us to make good long-term business decisions that will ultimately bring the best value to our customers.Chris Knaak, Business Development